Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Genus Triepeolus

Bees seeking hosts - Triepeolus - female Triepeolus (grandis?) - Triepeolus White wasp on Black-eyed Susan - Triepeolus lunatus possible tripeolus - Triepeolus lunatus - male Cuckoo Bee -- Triepeolus donatus?  - Triepeolus donatus - male Tiny Sand Wasp? - Triepeolus Cuckoo Bee  - Triepeolus lunatus Black & White Wasp - Triepeolus lunatus perhaps? - Triepeolus lunatus
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon (Aculeata - Ants, Bees and Stinging Wasps)
No Taxon (Anthophila (Apoidea) - Bees)
Family Apidae (Cuckoo, Carpenter, Digger, Bumble, and Honey Bees)
Subfamily Nomadinae (Cuckoo Bees)
Tribe Epeolini
Genus Triepeolus
Synonyms and other taxonomic changes
Includes Doeringiella sensu Michener (2000)
Numbers
108 spp. in our area, 147 spp. worldwide/total(1)
Range
holarctic + neotropical (map)(1)
Food
parasitic on Melissodes and possibly some of the other related eucerines
Remarks
Differences in the shape of the pygidial plate are used for generic ID of males (shorter and broadly rounded in Epeolus; narrower and with sinuate margins in Triepeolus). This can be difficult to see even in pinned specimens, so many males were described in the wrong genus, even by Cockerell and Mitchell! In females the obvious difference is the extent and configuration of a hair patch called the pseudopygidial area (shorter and more transverse in Epeolus). These hairs are often silvery. (John Ascher)
Internet References
Zootaxa. A review of the cleptoparasitic bee genus Triepeolus (Hymenoptera: Apidae)